Sound travels in air at an average speed of nearly________?A. 1257 miles per hourB. 755 miles per hourC. 330 miles per hourD. None of these 0 0 votesArticle Rating Subscribe LoginNotify of new follow-up commentsnew replies to my comments Label {} [+] Name* Email* Website Label {} [+] Name* Email* Website 0 Comments Oldest Newest Most Voted Inline FeedbacksView all comments
